Liquid-elevating apparatus



Aug'. 31 i926.

H. C. MRRISON LIQUID ELEVATING APPARATUS Filed March 5. 1925 I N VENTOR.

Patented Aug. 31, 1926.

Unirse stares PATNT FME..

LIQUIn-ELEVATING APPARATUS.

Application filed March 5, 1925. Serial No. 13,248.

This invention relates to liquid elevating apparatus, more particularlyto devices of this character associated with wells and the like, and hasfor one of its objects to improve the action and increase the outflow ofthe liquid therefrom without material increase of expense or additionsto the mechanism employed.

The primary object of the invention is the provision, in a manner ashereinafter set forth, of a pump construction in which thev pump pipe orinner casing and valves are enclosed in a sealed air-tight casing to setup, when liquid is drawn from therwell, a vacuum in the casing throughthe removal with the liquid of some of the air therein, thereby causingthe liquid to rise higher in the casing than would be the caseordinarily.

lVith these and other objects in view, the invention consists in certainnovel features of construction as hereinafter shown and described, andthen specifically pointed out in the claim, and in the drawingsillustrative of the preferred embodiment of the invention.

lFigure 1 is a vertical section of a conventional well casing andpumping appliance with the improvement applied.

Figure 2 is a transverse section on the line 2-2 ofFigure 1, looking inthe direction of the arrow.

Figure 3 is a view similar to Figure 1, on a reduced scale, illustratinganother means of constructing the improved device.

The structure embodying this invention comprises a well casing 1() ofappropriate diameter and which is adapted to extend through a pluralityof liquid bearing strata, one arranged above and spaced from the other,said liquid being indicated at 17 in the drawings. The casing isappropriately perforated to provide for the liquid from the liquidbearing strata entering same. As shown, the perforations are indicatedat 18 and are arranged in longitudinally spaced groups. end.

The upper end of the casing 10 is screw threaded as indicated at 10, andthreaded over this upper end is a closure cap 19 while interposedbetween the closure cap and the top of the casing` 10 is a sealinggasket 20. The cap 19 as shown, has a central passage therethrough andthe inner face The casing 10 is open at its lower.

of this passage is also provided with a sealv ing lining 21.

Extending through the passage in the cap 19 and sealed therein, is apump casing l/L having at its upper end the angled outlet 15 from whicha nozzle or other attachment may lead.

Upon the lower end of the pump casing 14 there is secured a valvecylinder 11 in which the valve head 11 is positioned and against thewalls of which the packing 12, carried by the valve head 11 bears. Thevalve head is provided with the usual gravity operated valve 12 and isconnected to and is supported bythe pump rod 16 which extends upwardlythrough the pump casing 14;.

At the lower portion of the cylinder 11 there is located an aperturedplate member 23, held against the end of the cylinder 11 by the reducingcoupling 24 which is threaded upon the cylinder end as'shown.

yTo this coupling a nipple 13 is attached which carries the strainerelement 13.

A longitudinally adjustable sealing element is inserted into the casing10, in the form of a disc such as that indicated by the numeral 22 inFigure 3, said disc being carried by the pipecasing 111 and having theedge thereof engaging the inner wall of the outer casing 10. This discis positioned at any desired point between the uppermost group ofperforations 18 and the upper end of the casing 10. By employing thissealing element thev chamber thereabove becomes a dead-air space whichcan be varied in size bylongitudinal movement of the disc and only theair below the sealing element will be exhausted when the pump .isoperated, thus reducing the area of the inside of the casing` which willhave the air exhausted therefrom.

ABy' this construction when the pump is first actuated and a portion ofthe liquid is drawnv off, a partial vacuum is produced in the casing 10,andfthe liquid rises inthe casing to lill the vacancy thus formed, whichincreases the head of the liquid to a corresponding extent and likewiseincreases the pressure and the lifting force of the pump.

As the operation of the pump continues, m5

the air is displaced in the sealed or vacuum chamber and replaced withthe liquid from one or more of the veins of strata and this liquid isutilized as though all the space above one lower vein of the liquid werea sealed chamber or vacuum space.

Nith one vein or strata of liquid at the bottom of the sealed chamber,or with all of the sealed chamber above the line of the liquid, apartial vacuum is created that the pump, regardless of its construction,operates to its full capacity.

ln operating the pump the small amount or' air in the sealed casing isdisplaced and replaced with and by the liquid in the casing seeking itslevel therein, thereby producing the same erlect that the vacuum wouldif no liquid took its place and discharged the air lett in the sealedchamber.

Initially more or less air is in the sealed chamber, but by theoperation of the pump this conlined air is displaced and carried outwith the liquid and this space replaced with the liquid which rises inthe sealed chamber, and this movement is partly governed by the valvesoit the pump.

The full flow of the liquid and the full capacity of the pump is thusassured.

By taking out a percentage of the air in the sealed chamber a suction orpull of the pump rod is created to draw ol with the flow, and it isgradually replaced in its re-action by the liquid in the sealed chamber,which after a few strokes o'l the pump creates a weight to aid the'further actions of the pump.

The re-action produces an evlliect similar to a siphon, as the liquidenters the sealed chamber when the pump is idle.

The sealed chamber being filled with liquid, the combination of thewater lilling in the sealed chamber with the closing of the lower orcheck valve of the pump, operates as a trap to hold the liquid up in thesealed chamber until the pumping is resumed, and the lower or checkvalve operates to hold the liquid to enable the plunger to gather itsload and elevate it through the pump tube.

By this means the benefit ot' the ordinary or lifting action is insuredby the increased benefit of the excess ilow, as above described, andadds the benelit of the increased weight and pressure and maintains aneven, uniform, and increased flow of the liquid.

The sealing medium as illustrated in Figure 3, may be disposed at anypoint within the outer casing, depending upon the number of liquid veinsto be tapped, the depth of the well, the power used in the pumpingaction.

The power required to operate the pump is necessarily increased becauseof the increased flow of liquid.

The improved device may be used for elevating water, oil, or the likewherein the pressure of gas is not sufficient to be utilizeeL for heator power to force the discharge o'l' the liquid.

By the improved apparatus, the full bene lit or all underflow of theliquid is utilized to the full capacity ot the conductor pipe, as thevalves of the pump have no escape except through the latter. conductorpipe is maintained during the pumping action regardless of where theseaL ing element is located, whether at the top as shown in Figure 1 orat any intermediate point as shown in Figure 3.

The nearer' to the liquid the sealing element is disposed the less powerwill be required to produce the requisite flow.

It a plurality of veins or strata of liquid are encountered, and thecasing sealed, the power required to operate the pump is diminished, andthe sealing element can be located nearer the line of the liquid, andthus decrease the power required to operate the pump.

The prefered embodiment ot the invention is disclosed in the drawingsand set forth in the specilication, but it will be understood thatmodifications within the scope of the claimed invention may be made inthe construction without departing from the principle of the inventionor sacrilicing any of -its advantages.

l'laving thus described the invention, what is claimed as new is:-

A device of the character described co1nprising a pump casing` havingtherein longitudinally spaced groups of openings a closure cap securedon the upper end thereof having an opening therein for the passage ol' apump element and a sealing element mounted in the bore of said casingbetween the uppermost group of' openings and the upper end of saidcasing and having an opening therein for the passage of a pump element,said sealing element being capable of longitudinal adjustment in saidcasing for the purpose of varying the space between said group ofopenings and said sealing element, as set forth.

In testimony whereof, I aliix my signature hereto.

HENRY C. MORRISON.

The full capacity of the 7 (ifi

